Apparatus for disintegrating pulp.



W. H. STOBIE.

APPARATUS FOR DISINTEGRATING PULP. APPLICATION FILED NOV. 27, 1912.

1,123,033, Patented Dec. 29, 1914.

'7) 2 9 If 4 J- 6 18" i 9 L 1 1 L- I I i I" 9 2 INVENTOR n STATES. PA

WILLIAM H. 51303113, 01 WATEBVILL E, MAINE.

API'ABATUS FOR PISINTEGRATINQ PULP.

Application area November 27, 1912. Serial no. 733,899.

To all whom it may concern:

Be it lmown that I, WIILIAM' H. S'roBrn, of Waterville, in the-county ofKennebec and State of Maine, have invented certain new anduseful'-Improvements in Appara tus for Disintegrating Pulp; and I do herebydeclare the followin to be a full, clear,

and exact description 0 the invention, such dividing or separating thefibers of the stock without breaking or cutting them, thereby producinga stockthat will felt better and more uniformly than the stock from an.ordinary beating engine, and my invention consists in a concavetarget,and a nozzle or plurality of nozzles for. forcibly ejecting the stockagainst a serrated concave face of the target whereby the stock will becaused to follow the curvature of the face and in contact withtheserrations or teeth thereon.

My invention further consists in the details of construction as will bemore fully described and pointed out in the claims.

In the accompanying drawings, Figure 1 is a diagrammatic representationof an apparatus embodying my invention. Fig. 2 is a view in verticalsection of one form of target. Fig. 3 is a view in rear elevation ofsame. Fig. 4 is a view in vertical section of another form; Fig. 5 is aview in rear elevation of the same and Fig. 6 is a view in elevation andsection ,of the serration or teeth on the inner concave face of thetarget.

1 represents the target made ofmetal, emery or other suitable material,and centrally secured on a shaft 2, thelatter projecting at the ends ofthe target so as to permit the shaft and the target thereon, to beadjusted longitudinally in order to bring unwornsurfaces of the targetin line with the nozzles 3. The front face of the target is providedwith a central longitudinal ridge 4 preferably pointed .or 'z-rounded-atits edge, and with concave depressions or gutters 5 on opposite sides ofthe ridge and 7 extending lengthwise the target. The inner concavesurface or surfaces of the target are serrated or toothed as shown inFig. 6, and the nozzles3 are located in the plane of the ridge 4, sothat the stock as it is forcibly ejected from the nozzle, will bedivided,

part traveling over the serrated face of each concave surface of thetarget. By thus di-, viding the stream of pulp into two parts, each partor stream will be comparatively shallow thus permitting of repeatedcontact of the fibers with the teeth, before the stock finally leavesthe toothed surface.

With the construction above described the shaft 2 passes throughbrackets 6 integral with the rear face of the target.

In the construction shown in Figs. 4 and Specification of LettersPatent. Pflten-hgfi Dec, 29, 1934.,

5, Ihave shown a target]. with a single 1 concavity, approximately asemi-circle in" cross section, with the nozzles located in a planeslightly below the top so as to prevent any outward splash and cause theentire stream to traverse the serrated face throughout the diameter ofthe latter. This concave target is preferably provided at its ends withspokes 8 the latter havin which the shaft 2 is secured.

preferably located in a vat containing the "paper stock which haspreviously been mixed with a proper proporm'on of water to reduce it toa consistency where it can be readily pumped and conveyed through pipes9 to the nozzles 3 which as previously explained are 'so located todischarge the stream against the concavity in the target andtangentially thereto. Where the targets are back into the vat and willbe again carried around and projected against the targets until thestock is in proper condition for felting. The targets may however belocated outside the vats, so that the stock, after one contact with thetarget, may be collected and carried off for the next ste in theprocess. The actionrof the serrate or toothed face on the stock, is todivide or be prepared, by this apparatus for the paper machine wi thoutany treatment whatsoever in the old style of heaters.

ocated in" the vats, the stock falls hubs 9 in he target is Having fullydescribed my invention what I claim as new and dedre to secure byLeItteIrIsI-Patent', isz-fd1 apparatus or 11mm tegrating or viding'fibrous paper stock the combination of a tank, a target, supportingmeans for h the latter constructed to permit the target I tobe'adjustedwiththe relationjo the noz zle, the target having a concaveserrated face, and a nozzle with relation site edge.

2. In apparatus for disinte ating or dividing fibrous stock the comination of a target, supporting means for the latter constructed topermit the target to be adjusted with, relation to the nozzle, thetarget having a central ridge and a gutter shaped concavity on each sideof the ridge,lthe two concave faces being roughened, and a noz- Vspecification in the zle located to discharge the against the ridgewhereby the stream will be di- 7 vlded into two parts one part passingover 15 each concave surface.

In testimony whereof, I have signed this presence of two subscribingwitnesses.

WILLIAM H. STOBIEQ Witnesses:

JOSEPH R. Goonwm, HARvEr L. BURRILL.

